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WAEC WASSCE Biology 2014 past questions and answers

This 2014 WAEC WASSCE Biology set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2014 set with instant marking.

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Sample WAEC WASSCE Biology 2014 questions

1. A student counts an average of 12 plants in each 0.25 m^2 quadrat. What is the estimated density of the plants per square metre?
  1. 48 plants
  2. 3 plants
  3. 24 plants
  4. 12 plants

Answer: A. 48 plants

One square metre contains four 0.25 m^2 quadrats, so the estimated density is 12 x 4 = 48 plants per square metre.

2. If producers store 10,000 kJ of energy and approximately 10% passes to the primary consumers, how much energy reaches the primary consumers?
  1. 10 kJ
  2. 100 kJ
  3. 1,000 kJ
  4. 9,000 kJ

Answer: C. 1,000 kJ

Ten percent of 10,000 kJ is 1,000 kJ.

3. Why can a top predator have a higher concentration of a persistent pesticide than the organisms it eats?
  1. The pesticide is rapidly destroyed in the predator
  2. The pesticide accumulates and becomes concentrated along the food chain
  3. The predator produces the pesticide during digestion
  4. The pesticide is converted into food energy by producers

Answer: B. The pesticide accumulates and becomes concentrated along the food chain

Persistent pesticides can accumulate in tissues and biomagnify as predators consume many contaminated prey.

4. In population ecology, carrying capacity refers to the
  1. number of births in a population each year
  2. number of species in a habitat
  3. smallest population that can survive
  4. largest population an environment can support over time

Answer: D. largest population an environment can support over time

Carrying capacity is the maximum population size that available resources can support sustainably.

5. Which organism commonly fixes atmospheric nitrogen in the root nodules of legumes?
  1. Nitrifying bacteria
  2. Rhizobium bacteria
  3. Denitrifying bacteria
  4. Mould fungi

Answer: B. Rhizobium bacteria

Rhizobium bacteria in legume root nodules convert atmospheric nitrogen into nitrogen compounds usable by the plant.

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